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Infrared Sensors Explained: Basics and Key Applications

Active infrared sensors emit their own infrared light and measure the amount that is reflected back. They typically use light-emitting diodes (LEDs) or lasers as sources. When the emitted beam is interrupted or when reflected radiation changes, the sensor reacts and ...

http://linqto.me/n/How-Infrared-LED-Hidden-Camera-Detectors-Work

  By:   Mark Twain    Hits:   2   Comments:   0

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